So here are pros and cons as I see it especially being a new beekeeper, myself as of March 12, 2016. 2016 for me was a good year.
A package Bee, it’s just that.
no frames
no foundation
no brood
no wax honeycomb
no real understanding if the clean is truly fertile and laying eggs
A NUC
has 5 frames foundation
has 3 solid frames of wax
has brood
has eggs
has stored honey
has store to pollen
Being a new beekeeper this would be a great advantage. This would give you a little bit of a head start. Yes a package B’s cost less but there’s reasons why they’ve got to make everything and without a doubt there’s additional trials you will need to go through. With a NUC it takes some learning and guesswork out of it. As you advance in what you’ve learned a package may be good for a future hive